Well, let's start with the ridiculously cheesy and campy tone that doesn't fit Spider-Man. Spider-Man comics are a lot more serious than that. They may not be Batman dark (at least not most of them) but they're definitely not that cheesy and silly.
When it needed to be, the '02 film was finely "dark". It had its campiness, but that is only Raimi's shtick, but Raimi did understand certain elements needed to be "dark" which what happened with Green Goblin and even in Spider-Man 2 with Doc Ock.
I feel the word campy is used a lot more lately since TAS-M tbh.
Then there is Peter Parker/Spider-Man. Tobey Maguire does portray Peter Parker as a nerd, but the wrong type of nerd. Peter Parker in the comics was never the clumsy George McFly stereotypical nerd-dork, which is what Tobey portrays him as. He was more of a smartass nerd and wasn't the stereotypical nerd past the glasses and haircut (in the 60's comics, that is). There are moments in the classic Lee/Ditko stories where he constantly talks backs to Flash and even challenges him to a boxing match at one point because he gets tired of his crap. He even demanded Jameson to raise his salary at one point. Tobey's Peter is a pushover, far beyond the pushover limit that you should make Peter a pushover. His Peter was the bud of everyone's joke, while in the comics, with the exception of Flash and the main popular kids, the rest of the school just ignored Peter. They didn't pick on him but weren't friendly to him either. He was an outcast. Then in terms of writing, Peter is never shown to be intelligent. They keep talking about how smart he is but we never see him invent something or use his wits in battle. The only time we see him do anything close to that is in Spider-Man 3 when he figures out Venom's weakness.
Raimi's Peter is definitely my favorite version of him between the two Spidey films and I enjoy that far better than Webb's version, but I do understand how some don't enjoy the "over-the-top" nerd as Tobey's Peter Parker was. But, that version never bothered me as it was something different and showed a huge contrast from Peter pre-spider bite and after the spider bite. There was no contrast such as that in TAS-M before the spider bite and after.
Plus, where in the first two movies did it really call for Peter to use his intelligence and wits as much as he did in his battle with Venom?
As for Tobey's Spider-Man, Tobey portrayed him as a mute serious crimefighter, the exact opposite of what Spidey is. He barely quips and when he doesn't, he can't deliver the lines properly.
Feel the very opposite. When he did deliver the lines, they were top notch, imo. But it's also not like Webb's Spidey was so quick with the quips either. The only memorable one, imo, is when he yelled out "Crotch!"
Then there is Kirsten Dunst. That's pretty self explanatory right there. lol
Which I already brought up, so you get no points for this, lol.
Then there is the Green Goblin. The look is the least of my problems with him. He is ridiculously watered down in comparison to his comic book counterpart and completely lacks everything that makes the Green Goblin scary, threatening, and menacing. I don't blame Dafoe for this. I believe he may be able to pull off a good GG but the writers wrote him incredibly cheesy. Not to mention he lacks a clear motivation (we discussed this before).
Not cheesy, but definitely watered down. It did hurt with being involved in an origin film which we never see a main villain being used while in an origin film, but, imo, as we see in TAS-M, even a villain that isn't the greatest villain to the hero can still be watered down extremely in an origin film. I can at least say Norman Osborn felt properly developed as opposed to Curt Connors even if Green Goblin wasn't up to his comics ways.
I can't say much on Harry since they barely do anything with him. He was alright. Just alright.
He was alright in the first film, great in Spider-Man 2 and only okay in Spider-Man 3. His death was his only real powerful performance in S-M 3.
Then there is the origin. Not only is it rushed and once it's out of the way it feels like a whole different film but there are small flaws here and there that bother me other than it being rushed such as the wrestling scene. So Peter is stupid enough to show his face to all the people working there. I can kinda let that slip. What I can't let slip is him signing up (and yes, he signed up - he even says "I did not sign up for this" when in the cage). Him signing up as in with his official name since that's the only way he can get in. Can't they track him down and know that Peter Parker is Spider-Man? Any cop can find out through enough research that a guy that signed up at some wrestling match went by the name "Spider-Man" and can track Peter down to investigate.
Not only is it rushed and once it's out of the way it feels like a whole different film
^ How I feel with TAS-M, lol.
I don't think the '02 film rushes an origin at all. While he gets bitten very quickly, his trials of learning his abilities and trying to use his powers for money is greatly detailed and definitely feels Peter really learned "With great power comes great responsibility" much, much better than in the reboot, even if Peter doesn't learn that until the third film or what have you in Webb's series.